WA Part H9 Water use
Introduction to this Part
This Part contains requirements for reducing water use.
Objectives
The Objective is to reduce water demand by using water efficiently and minimising water wastage.
Efficient use of water
Functional Statements
To reduce potable water demand, a building is to be capable of using potable water efficiently and preventing excessive loss of potable water.
Potable water demand
Performance Requirements
A building must have features that, to the degree necessary, facilitate the efficient use of potable water appropriate to—
- the geographic location of the building; and
- the available potable water supply of the building; and
- the function and use of the building.
Applications
WA H9P1 only applies to Class 1 buildings, associated Class 10a buildings and swimming pools associated with a Class 1 building.
Water use efficiency
A building, including any water holding structure, must have features that, to the degree necessary, prevent excessive loss of potable water appropriate to—
- the geographic location of the building; and
- the available potable water supply for the building; and
- the function and use of the building; and
- the effects of permanent features such as topography, structures and buildings.
Applications
WA H9P2 only applies to Class 1 buildings, associated Class 10a buildings and swimming pools associated with a Class 1 building.
Water loss prevention
A building must have features that, to the degree necessary, facilitate the efficient use of heated water appropriate to—
- the geographic location of the building; and
- the available heated water supply for the building; and
- the function and use of the building.
Applications
WA H9P3 only applies to Class 1 buildings, associated Class 10a buildings and swimming pools associated with a Class 1 building.
Heated water use efficiency
Deemed-to-Satisfy Provisions
Deemed-to-Satisfy Provisions
Water use efficiency
An outdoor private swimming pool or spa associated with a Class 1 building must be supplied with a cover, blanket or the like that—
- is deigned to reduce water evaporation; and
- is accredited under the Smart Approved Watermark Scheme governed by the Australian Water Association, the Irrigation Association of Australia, the Nursery and Garden Industry Australia and the Water Services Association of Australia.
Swimming pool covers and blankets
Heated water use efficiency